The river basin formed by probably conquest by the Tambo river. Another external influences were Puquina and the Kauiqui as ando with characteristic suffixes. Influence of the sea was decisive on coast inhabitants and the valley. The War of the Pacific Mollendo was invaded under the command of Colonel Orozimbo Barbosa by Chilean forces. Colonel Barbosa left Mollendo in search of the defenders towards Mejia, arrived in Mejia, surprised the defenders at Ensenada. The town of Mollendo is serviced by the small civilian Mollendo Airport ICAO Code The town.